DOI: 10.1002/jgrd.50702
论文题名: Seasonal variations of Asian black carbon outflow to the Pacific: Contribution from anthropogenic sources in China and biomass burning sources in Siberia and Southeast Asia
作者: Matsui H. ; Koike M. ; Kondo Y. ; Oshima N. ; Moteki N. ; Kanaya Y. ; Takami A. ; Irwin M.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 17 起始页码: 9948
结束页码: 9967
语种: 英语
英文关键词: aerosol
; Asian outflow
; biomass burning
; black carbon
; source contribution
; three-dimensional model
Scopus关键词: Aerosols
; Air quality
; Biomass
; Asian outflow
; Biomass-burning
; Black carbon
; Source contributions
; Three-dimensional model
; Computer simulation
; aerosol
; air quality
; anthropogenic source
; atmospheric modeling
; atmospheric pollution
; biomass burning
; black carbon
; concentration (composition)
; emission
; measurement method
; numerical model
; seasonal variation
; three-dimensional modeling
; transboundary pollution
; Pacific Ocean
; Southeast Asia
英文摘要: The Community Multiscale Air Quality model with a source and process tagged method (CMAQ/PASCAL) was used to understand source regions and types (anthropogenic (AN) and biomass burning (BB)) of Asian black carbon (BC) outflow to the Pacific during 2008-2010. The model simulations generally reproduced absolute concentrations and temporal (seasonal, monthly, and day-to-day) variations of BC mass concentrations, observed by both surface and aircraft measurements in outflow regions in East Asia. These model simulations show that both the total eastward flux and transport efficiency (fractions transported from sources) of BC are highest during spring (26 kg s-1 and 33% at 150°E) and lowest during summer (8 kg s-1 and 20% at 150°E). These seasonal variations of Asian BC outflow are generally controlled by transport patterns (monsoons, frontal passages, and convection) and emissions from the following three sources: (1) AN emissions from China (China AN), (2) BB emissions from Southeast Asia and South China (SEA BB) during February-April, and (3) BB emissions from Siberia and Kazakhstan (Siberia BB) during April-July. In our simulations, China AN dominates the total eastward BC flux on a 3 year average (61%, 17%, and 6% from China AN, Siberia BB, and SEA BB, respectively, at 150°E). In contrast, SEA and Siberia BB account for 30-50% of the total eastward BC flux (150°E and 175°E) during spring and summer, and they increase the seasonal variability of the Asian BC outflow flux. BC from Siberia BB is also found to be transported to the Pacific more efficiently than BC from other sources. Although the magnitudes of BB emissions are highly uncertain, our results suggest that the control of Siberia BB will be important in terms of the transboundary transport of BC to the Pacific, North America, and the Arctic. Key PointsSource regions and types of Asian BC outflow are examined using CMAQ/PASCALMain sources of the BC outflow are China AN, Siberia BB, and Southeast Asia BBWe show the importance of biomass burning emissions from Siberia and Kazakhstan ©2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63332
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Department of Earth and Planetary Science, Graduate School of Science, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan; Meteorological Research Institute, Ibaraki, Japan; Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan; National Institute for Environmental Studies, Ibaraki, Japan
Recommended Citation:
Matsui H.,Koike M.,Kondo Y.,et al. Seasonal variations of Asian black carbon outflow to the Pacific: Contribution from anthropogenic sources in China and biomass burning sources in Siberia and Southeast Asia[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(17)